Surah 44. Ad-Dukhan, Ayah 22

They would not even leave him alone to do his duty. So he cried to Allah, not indeed to destroy them, for a Prophet does not judge, but only Allah judges; he justified himself in prayer, that he had done his best, but they were obdurate in sin, and they were trying to oppress and injure the believers. Then came the order to march. They were to march under the cover of night, because the enemy was sure to pursue. They were to march with all believers, presumably believing Egyptians (such as were not martyred) as well as Israelites, for some Egyptians had believed: vii. 121.